1.Electrical conductivity: The electrical conductivity of aluminum alloy is 61.5% of the most commonly used benchmark material copper IACS, and the current carrying capacity is 79% of copper, which is better than the pure aluminum standard.
2.Creep resistance: The alloy material and annealing treatment process of aluminum alloy conductors reduce the "creep" tendency of the AAAC conductor under heat and pressure. Compared with pure aluminum, the creep resistance performance is increased by 300%, avoiding cold flow. Or slack caused by creep.
3.Tensile strength and elongation: Compared with pure aluminum conductors, aluminum alloy conductors have added special ingredients and adopted special processing techniques to greatly improve the tensile strength and elongation to 30%. It is safer and more reliable to use.
4.Coefficient of thermal expansion: The coefficient of thermal expansion is used to calculate the size change of the material when the temperature changes. The thermal expansion coefficient of aluminum alloy is equivalent to that of copper. Aluminum connectors have been reliably used for copper and aluminum conductors for many years, and most of the electrical connectors used today are made of aluminum, which is especially suitable for aluminum alloys. Therefore, the expansion and contraction of the acsr conductor and the connector are exactly the same.
5.Strong self-weight bearing capacity Aluminum alloy improves the tensile strength of pure aluminum. Aluminum alloy cables can support a self-weight of 4000 meters in length, while copper cables can only support 2750 meters. This advantage is particularly prominent when wiring large-span buildings (such as stadiums).
- Anti-corrosion performance The inherent anti-corrosion performance of aluminum comes from the formation of a thin and strong oxide layer when the aluminum surface is in contact with air. This oxide layer is particularly resistant to various forms of corrosion. The rare earth elements added to the alloy can further improve the corrosion resistance of the aac conductor size, especially the electrochemical corrosion. Aluminum's ability to withstand harsh environments makes it widely used in conductors of cables in trays, as well as many industrial components and containers. Corrosion is usually related to the connection of different metals in a humid environment. Corresponding protective measures can be used to prevent corrosion, such as the use of lubricants, antioxidants and protective coatings. Alkaline soils and certain types of acidic soils are highly corrosive to aluminum. Therefore, directly buried aluminum conductors should use insulating layers or molded sheaths to prevent corrosion. In sulfur-containing environments, such as railway tunnels and other similar places, the corrosion resistance of aluminum alloy is much better than that of copper.
- Flexibility Aluminum alloy has good bending performance, and its unique alloy formula and processing technology greatly increase flexibility. Aluminum alloy is 30% more flexible than copper and 40% less resilient than copper. Generally, the bending radius of copper cables is 10 to 20 times the outer diameter, while the bending radius of aluminum alloy cables is only 7 times the outer diameter, making it easier to connect terminals.